<template>
  <div>
    <div class="search">
      <input class="search-input" v-model='keyword' type="text" placeholder="输入城市名或拼音">
      <div class="search-content" ref="search" v-show='keyword'>
        <ul>
          <li
            class="search-item border-bottom"
            v-for='(item,index) of list'
            :key='index'
            @click='handleCityClick(item.name)'>
            {{item.name}}
          </li>
          <li class="search-item border-bottom" v-show="hasNoData">没有找到数据匹配</li>
        </ul>
      </div>
    </div>
  </div>
</template>

<script>
import { mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default{
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
      this.keyword = ''
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scoll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
    height:.72rem
    background:$bgColor
    padding:0 .1rem
    .search-input
      box-sizing:border-box
      width:100%
      height:.62rem
      padding:0 .1rem
      line-height:.62rem
      text-align:center
      border-radius:.06rem
      color:#666
    .search-content
      z-index:1
      overflow:hidden
      position:absolute
      top:1.58rem
      right:0
      left:0
      bottom:0
      background:#eee
      .search-item
        line-height:.62rem
        padding-left:.2rem
        background:#fff
        color:#ccc
</style>
